STUDIES IN NEOTROPICAL MALLOPHAGA—CARRIKER 151 
The female is close to that of mandibwlaris, differing but slightly in 
shape of temples and length of internal projections from the frons. 
Measurements are given with those of H. m. motilonensis. 
HEPTAPSOGASTER MANDIBULARIS MOTILONENSIS, new subspecies 
FIguReE 13, g,; h 
Types.—Male and female, adults, from Crypturellus sour (mustel- 
mus ?), collected by the author at Airoca,® Sierra Perija, Colombia, 
April 7, 1942; in U. S. National Museum. 
Diagnosis.—Represented by the pair of types and a second female, 
taken on the same host, at Tierra Nueva, Sierra Perij4é, Colombia, in 
1941. The head of the male in this race closely resembles that of H. m. 
nigriceps (from C. soui ngriceps), except that the frons is some nar- 
rower and more convex and the temples are slightly more divergent. 
The female also has the head close to that of nigriceps, but the apical 
prongs on abdominal segment VII are much longer, asin zdoneus. ‘The 
male genitalia resemble superficially those of yapurae, except that the 
paramers are shorter and proportionately wider at their bases. The 
endomeral plate is very similiar, as well as the apical prongs, but there 
seems to be a small penis present, as in nigriceps, while the internal, 
chitinized struts are different from those of yapurae. The scent gland 
is of the type of garleppz, short but less thickened. 
MEASUREMENTS OF HEPTAPSOGASTER MANDIBULARIS 
idoneus motilonensis 
Structure Male Female Male F emale 
Width | Length] Width | Length] Width 
Length} Width | Length 
1 BXOYS by ALi LO nah LLU ea NN S23 1)| eevee LS GO Sy ieee ee OS Vise eee 1,32 
Head tyavey epee ray MoM vey A 0.42 0. 56 0. 423 0.57 0.348 0. 456 0.37 0. 50 
LOLOL Xe 2 tu MN AMIN lps 0.15 0. 303 0.15 0. 326 0.12 0. 25 0.13 0. 27 
Mesothoraxc ee ahaa uD 0.185 0. 575 0.195 0. 586 0.174 0. 46 0.14 0. 50 
Metathordx: 200) Tgp 4 otis 0.13 0. 524 0.14 0. 55 0.108 0. 42 0.12 0. 466 
PAS DL OME TUN ee AE Na Bi sRe es Uy 0. 684 0. 64 0. 92 0.73 0. 55 0. 52 0. 76 0. 586 
HeNG ANS) 98 OY Tepe et ie NN EP 0. 25 0. 068 0. 20 0. 0438 0. 215 0. 055 0. 174 0. 033 
Paramersho tive ey Nae Ud agen ay. 0. 143 C895 0 OW: SIN SES SE PE Pa ol 0. 102 OSO72) jks Eee 
Hndomeraliplates v2 Se OTST MONOD Ti ipanencaanes | Calsenylaay 0. 08 OX04 lee ae oe 
HEPTAPSOGASTER INEXPECTATA INEXPECTATA, new name 
Heptapsogaster stultus stultus Cuay, Proc. Zool. Soc. London, ser. B, 1937, p. 
1386 (partim,-@), fig. 2c, pl. 1, fig. 4. (Host: Crypturellus o. obsoletus, 
Argentina. ) 
The descriptions and figures given by Miss Clay for the female of 
H. s. stultus are ample for the recognition of the species, but without 
* Airoca is a small hamlet (“rancheria’’) of the very primitive Motil6n Indians, where the 
author spent a month in 1942, hence the name motilonensis. 
